Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 781 [Rate centres in NPA 781] [Dial plan for NPA 781]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-574 A Arlington MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
781-574 0 Arlington MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
781-574 1 Arlington MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
781-574 2 Arlington MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
781-574 3 Arlington MA SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2021-09-24   
781-574 4 Arlington MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
781-574 5 Arlington MA CMBRMAMQDS0  4536 XO MASSACHUSETS, INC. 128      
781-574 7 Arlington MA BSTPMALLZMD  506J TWILIO INTERNATIONAL INC 128   2020-12-19   
781-574 8 Arlington MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-08-21   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.